Wake-vortex characteristics of military-type aircraft measured at Airport Oberpfaffenhofen using the DLR Laser Doppler Anemometer

摘要

The DLR ground-based cw Doppler lidar was used for experimental investigations of wake vortices gene- rated by military-type aircraft, including fixed-wing as well as rotor-wing aircraft. The measurements were mainly focused on the roll-up phase of the vortices. The experimental data has been analysed regarding vor- tex structure and circulation, partly also regarding their temporal development. The influence of flight para- meters was measured during consecutive aircraft fly-bys.